They are offering Emergency Temporary Access that allows users to access a digitized copy in HathiTrust that matches an item held in University Libraries print collection. Login in before searching for best results.
Search for records and available scans of books. Create a free account to checkout and read available titles. If you created an account with the National Emergency Library, that will work with Open Library as well.
A large number of publishers have extended free access to their ebooks on JSTOR's site through August 31, 2020. Expanded access to all Journal Archives and Primary Source collections is now extended through December 31, 2020.